Preview Tool

Last Modified

Nov 19, 2018

Products (1)

Cisco Aironet 3700 Series Access Points

Known Affected Releases

7.4(121.0) 8.0(80.1)

Description (partial)

Symptom:APs dropping traffic, while roaming phones will drop a few packets losing voice comunication.
Debug on the AP radio shows "o can not arp the ac ip address, retry later".
A packet capture on the AP will show the AP sending GARPs and ARP requests every 2 seconds or less, even when there is always a response from all devices.
Conditions:11n or 11ac APs in the same VLAN as the WLC. Core router is VRRP and is frequently sending GARPs for its own address.